<!DOCTYPE html >
<html>
<head>
    <link rel="stylesheet" href="demos.css" type="text/css" media="screen" />

    <script src="../libraries/RGraph.common.core.js" ></script>
    <script src="../libraries/RGraph.common.dynamic.js" ></script>
    <script src="../libraries/RGraph.scatter.js" ></script>
    
    <title>RGraph demo: A Scatter chart with the crosshairs snap option</title>
    
    
    <meta name="robots" content="noindex,nofollow" />
    <meta name="description" content="A Scatter chart which is using crosshairs and the snap option" />
     
</head>
<body>

    <!-- Share buttons -->
    <p style="float: right">
        <script>
            document.write('<a href="" target="_blank" onclick="window.open(\'https://www.facebook.com/sharer/sharer.php?u=http://www.rgraph.net' + location.pathname + '\', null, \'top=50,left=50,width=600,height=368\'); return false"><img src="../images/facebook-large.png" width="200" height="43" alt="Share on Facebook" border="0" title="Visit the RGraph Facebook page" id="facebook_link" /></a>&nbsp;');
            document.write('<a href="https://twitter.com/_rgraph" target="_blank" onclick="window.open(\'https://twitter.com/intent/tweet?text=Check%20out%20this%20demo%20of%20RGraph:%202D/3D%20JavaScript%20charts%20-%20Free%20and%20Open%20Source%20http://www.rgraph.net' + location.pathname + '\', null, \'top=50,left=50,width=700,height=400\'); return false"><img src="../images/twitter-large.png" width="200" height="43" alt="Share on Twitter" border="0" title="Mention RGraph on Twitter" id="twitter_link" /></a>');
        </script>
    </p>


    <h1>A Scatter chart demonstrating  the crosshairs snap option</h1>
    
    <p>
        This Scatter chart demonstrates how you can extract the Scatter charts dataset and index from the variables set on the canvas tag
        by RGraph.
    </p>

    <canvas id="cvs" width="600" height="400">[No canvas support]</canvas>
    
    <script>
        scatter = new RGraph.Scatter({
            id:'cvs',
            data: [
                [[0,0,'red'],[5,5,'red'],[10,10,'red'],[15,15,'red'],[20,20,'red'],[25,25,'red'],[30,30,'red'],[35,35,'red'],[40,40,'red'],[45,45,'red'],[50,50,'red']],
                [[0,0,'green'],[5,1,'green'],[10,2,'green'],[15,3,'green'],[20,4,'green'],[25,5,'green'],[30,6,'green'],[35,7,'green'],[40,8,'green'],[45,9,'green'],[50,10,'green']]
            ],
            options: {
                xmax: 100,
                crosshairs: true,
                crosshairsSnap: true,
                gutterLeft: 50,
                line: true,
                lineColors: ['red','green'],
                labels: ['Q1','Q2','Q3','Q4'],
                textAccessible: true
            }
        }).draw()

        
        scatter.oncrosshairs = function (obj)
        {
            document.getElementById("dataset").value =  obj.canvas.__crosshairs_snap_dataset__;
            document.getElementById("point").value =  obj.canvas.__crosshairs_snap_point__;
        };
    </script>
    
    <p />
    
    Dataset:<br />
    <input id="dataset" type="text" /><br /><br />

    Point:<br />
    <input id="point" type="text" />






    <p></p>

    This goes in the documents header:
    <pre class="code">
&lt;script src="RGraph.common.core.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.common.dynamic.js"&gt;&lt;/script&gt;
&lt;script src="RGraph.scatter.js"&gt;&lt;/script&gt;
</pre>
    
    Put this where you want the chart to show up:
    <pre class="code">
&lt;canvas id="cvs" width="600" height="400"&gt;
    [No canvas support]
&lt;/canvas&gt;
</pre>

    This is the code that generates the chart:
    <pre class="code">
&lt;script&gt;
    scatter = new RGraph.Scatter({
        id:'cvs',
        data: [
            [[0,0,'red'],[5,5,'red'],[10,10,'red'],[15,15,'red'],[20,20,'red'],[25,25,'red'],[30,30,'red'],[35,35,'red'],[40,40,'red'],[45,45,'red'],[50,50,'red']],
            [[0,0,'green'],[5,1,'green'],[10,2,'green'],[15,3,'green'],[20,4,'green'],[25,5,'green'],[30,6,'green'],[35,7,'green'],[40,8,'green'],[45,9,'green'],[50,10,'green']]
        ],
        options: {
            xmax: 100,
            crosshairs: true,
            crosshairsSnap: true,
            gutterLeft: 50,
            line: true,
            lineColors: ['red','green'],
            labels: ['Q1','Q2','Q3','Q4'],
            textAccessible: true
        }
    }).draw()

    
    scatter.oncrosshairs = function (obj)
    {
        document.getElementById("dataset").value =  obj.canvas.__crosshairs_snap_dataset__;
        document.getElementById("point").value =  obj.canvas.__crosshairs_snap_point__;
    };
&lt;/script&gt;
</pre>


    <p>        
        <a href="./">&laquo; Back</a>
    </p>

</body>
</html>